Simple Resolver Demodulation

A simple method to demodulate the resolver signal is introduced in this article. The proposed method can provide the demodulated resolver quadrature signals, sine and cosine, without requiring the resolver excitation signal as the carrier signal. Therefore, the phase delay between the stator winding and the rotor winding is avoided. The configuration of this approach consists of commercial avariable circuit building blocks such as comparator, simple and hold (S/H) and monostable multivibrators. Thus, the proposed approach is obtained to the economical attraction. The operation of the proposed demodulator and its performances are confirmed by simulation and experimental results.